<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
           
        </el-breadcrumb>

       <el-card>
          <el-row>
              <el-col>
                  <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
              </el-col>
          </el-row>

          <!--角色列表区域-->
          <el-table :data="roleList" border stripe>
                <el-table-column type="expand">
                    <template v-slot="scope">
                        <el-row :class="['bdbottom',i1 === 0 ? 'bdtop' :'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                            <el-col :span="5">
                                <el-tag closable @close="removeRightById(scope.row,item1.id) :span="19">{{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>

                            <!--渲染二级和三级权限-->
                            <el-col :span="19">
                                <!--通过for循环嵌套渲染二级权限-->
                                <el-row :class="[i2 === 0 ? '' : 'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag closable @close="removeRightById(scope.row,item2.id) type="success">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>  
                                    </el-col>

                                    <el-col :span="18" >
                                        <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">
                                            {{item3.authName}}
                                        </el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                        
                        
                    </template>
                </el-table-column>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px">
                    <template v-slot="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit"  @click="showEditDialog(scope.row.id)">编辑</el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
                        <el-tooltip class="item" effect="dark" content="分配权限" placement="top">
                            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
          </el-table>
       </el-card>


       <!--添加角色-->
       <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%" @close="addDialogClosed">
            <!--内容主体区-->
            <el-form :model="addFormRole" :rules="addRoleRules" ref="ruleFormRef" label-width="70px" >
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="addFormRole.roleName"></el-input>
                </el-form-item>

                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="addFormRole.roleDesc"></el-input>
                </el-form-item>

            
            </el-form>
            <!--底部区-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addRole">确 定</el-button>
            </span>
        </el-dialog>


        <!--编辑角色-->
        <el-dialog
            title="修改角色"
            :visible.sync="dialogVisible"
            width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="editForm.roleName"></el-input>
                </el-form-item>

                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="editForm.roleDesc"></el-input>
                </el-form-item>
               
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="dialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editRole">确 定</el-button>
            </span>
        </el-dialog>

        <!--分配权限-->
        <el-dialog
        title="提示"
        :visible.sync="setRightDialogVisible"
        width="50%" @close="setRightDialogClosed">
        <el-tree :data="rightsList" :props="treeProps" ref="treeRef" show-checkbox node-key="id" :default-checked-keys="defKeys" default-expand-all></el-tree>
        <span slot="footer" class="dialog-footer">
            <el-button @click="dsetRightDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="allotRights">确 定</el-button>
        </span>
        </el-dialog>
       
    </div>
</template>

<script>
export default {
    data(){
        return {
            roleList:[],
            addFormRole:{
                roleName:'',
                roleDesc:''
            },
            addDialogVisible:false,
            addRoleRules:{
                roleName:[
                    {required:true,message:"请输入角色名",trigger:'blur'},
                    {min:2,max:6,message:'用户名的长度在2-6个字符之间',trigger:'blur'}
                ],
                roleDesc:[
                    {required:true,message:"请输入角色的描述",trigger:'blur'},
                    {min:3,max:20,message:'用户名的长度在3-20个字符之间',trigger:'blur'}
                ]
            },
            editForm:{},
            editFormRules:{
                roleName:[
                    {required:true,message:"请输入角色名",trigger:'blur'},
                    {min:2,max:6,message:'用户名的长度在2-6个字符之间',trigger:'blur'}
                ],
                roleDesc:[
                    {required:true,message:"请输入角色的描述",trigger:'blur'},
                    {min:3,max:20,message:'用户名的长度在3-20个字符之间',trigger:'blur'}
                ]
            },
            dialogVisible:false,
            setRightDialogVisible:false,
            //所有权限的数组
            rightsList:[],
            treeProps:{
                label:'authName',
                children:'children'
            },
            defKeys:[],
            roleId:''
    }},
    created() {
        this.getRoleList()
    },
    methods:{
        async getRoleList(){
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error('获取角色列表失败')
            }
            this.roleList = res.data
        },
        addDialogClosed(){
            this.$refs.ruleFormRef.resetFields()
        },
        addRole(){
            this.$refs.ruleFormRef.validate(async valid => {
                if(!valid) return 
                const {data:res} = await this.$http.post('roles',this.addFormRole)
                if(res.meta.status !== 201){
                    this.$message.error('添加角色失败')
                }
                this.$message.success('添加角色成功')
                //隐藏用户对话框
                this.addDialogVisible = false
                this.getRoleList()
            })
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        async showEditDialog(id){
            console.log(id)
            const {data:res} = await this.$http.get('roles/' + id)
            if(res.meta.status !== 200){
                return this.$message.error('查询数据错误')
            }
            this.editForm = res.data
            console.log(this.editForm)
            this.dialogVisible = true
        },
        editRole(){
            this.$refs.editFormRef.validate(async valid => {
                
                console.log('aaa',this.editForm)
                const {data:res} = await this.$http.put('roles/'+this.editForm.roleId,{
                    roleName:this.editForm.roleName,
                    roleDesc:this.editForm.roleDesc,
                })
                if(res.meta.status !== 201){
                    this.$message.error('更新角色失败')
                }
                this.$message.success('更新角色成功')
                //隐藏用户对话框
                this.dialogVisible= false
                this.getRoleList()
            })
        },
        async removeRightById(role,rightId){
            //弹框提示是否删除
            const confirmResult = await this.$confirm('此操作将永久删除该文件，是否继续?','提示',{
                confirmButtonText:'确定',
                cancelButtonText:"取消",
                type:"warning"
            }).catch(err => err)

            if(confirmResult !== 'confirm'){
                return this.$message.info('取消了删除!')
            }

            const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            if(res.meta.status !== 200){
                return this.$message.error('删除权限失败')
            }
            //目的是为了防止刷新
            // this.getRoleList()
           
            role.children = res.data
        },
        async showSetRightDialog(role){
            //展示分配权限对话框
            const {data:res} = await this.$http.get('rights/tree')
            if (res.meta.status !== 200){
                return this.$message.error('获取用户权限失败')
            }
            this.rightsList = res.data
            this.roleId = role.id
            this.getLeafKeys(role,this.defKeys)
            this.setRightDialogVisible = true
        },
        //通过递归的形式，获取角色下所有的三级权限的id，并保存到defkeys数组中
        getLeafKeys(node,arr){
            //如果当前node接待你不包含children属性，则是三级节点
            if(!node.children){
                return arr.push(node.id)
            }
            node.children.forEach(item =>
            this.getLeafKeys(item,arr)
            )
        },
        setRightDialogClosed(){
            this.defKeys = []
        },
        async allotRights(){
            const keys = [
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            const idStr = keys.join(',')
            const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{
                rids:idStr
            })

            if(res.meta.status !== 200){
                return this.$message.error('分配权限失败')
            }
            this.$message.success('分配权限成功')
            this.getRoleList()
            this.setRightDialogVisible = false
        }
    }
}
</script>

<style lang="less" scoped>
.el-tag{
    margin: 7px;
}

.bdtop{
 border-top: 1px solid #eee;
}

.bdbottom{
    border-bottom: 1px solid #eee;
}

.vcenter{
    display: flex;
    align-items: center;
}
</style>